The Four-Color map Theorem
Map color problem
Four-Colour Map Problem
4CT
4 colour map problem
Four Color Problem
Seven colour theorem
4-color problem
Four Color Conjecture
Four colour map problem
Four-colour theorem
4 color problem
Four colour problem
Proof of the 4 color theorem
4-colors theorem
Four-color map
Four-color theorem
Four Color Theory
Four-color conjecture
4 colour theorem
4 color theorem
Four-colour Theorem
Four color problem
Four color map problem
Four-color problem
Four Color Theorem
Map coloring problem
Four color theorem
Four color theorem
-1
Section::::Important examples.:Fermat's Last Theorem.

Conjecture
6138
Four color theorem
-1
Section::::Abstract.
Four color theorem
10949
Minimum number of map colors
Four-Color Maps
Four-Colour Theorem
Four Colour Theorem
Four color map theorem
Four-color map theorem
4-color theorem
Four-colour problem
Four color conjecture
4-color conjecture
Four-Color Theorem
History of the four color theorem
-1
Section::::Informal account of theorems.

Theorem
30977
History of the four color theorem
-1
Section::::Methods.:Proof by exhaustion.

Mathematical proof
82285
History of the four color theorem
-1
Section::::Schooling and teaching.

Kenneth Appel
311544
History of the four color theorem
-1
Section::::Important examples.:Four color theorem.

Conjecture
6138
History of the four color theorem
-1
Section::::Precise formulation of the theorem.

Four color theorem
10949
History of the four color theorem
-1
Section::::Modern.:20th century.

History of mathematics
14220
Four colour theorem
Map-coloring problem
four color problem
4ct
proof of 4 color theorem
seven colour theorem
map coloring problem
minimum number of map colors
four color map
four color maps
map color problem
four color theory
four color theorem
four colour theorem
history of four color theorem
four colour map problem
four colour problem
four color map theorem
4 colors theorem
4 color conjecture
four color map problem
four color conjecture